He hath caused the arrows of his quiver to enter into my reins.
He goes on with the same metaphor; he said in the last verse that God had leveled his bow; he now adds, that his arrows had penetrated into his reins, that is, into his inward parts. But we must bear in mind what the Prophet meant, that God had dealt so severely with the people, that no part, even the innermost, was sound or untouched...
God is angry with His own people, yet it comes as a rod to correct, not a sword to destroy. Walk in darkness though we may, we must not quarrel with affliction, for His anger is just and His chastening, though grievous now, mixed with mercy.
AI summary
Commenting on Lamentations 3:1-20
He hath caused the arrows of his quiver,.... Or, "the sons of his quiver" (i); an usual Hebraism; the quiver is compared, as Aben Ezra observes, to a pregnant woman; and Horace has a like expression, "venenatis gravidam sagittis pharetram" (k); the judgments of God are often signified by this metaphor, even his four sore ones, sword, famine, pestilence, and noisome beast, Deu 32:23; these...